SQL查询语句的优化顺序:(8)选择(9) [不同的] (11)结果传递给列表[INTO新数据表名称] (1)从数据表(3) [INNER | LFT | RIGHT] JOIN数据表(2) ON (4) [WHERE ] (5) [GROUP BY ] (6) [WITH {CUBE | ROLLUP} (7) [HAVING ] (10) ORDER BY [ASC | DESC]] *